天津市大气气溶胶中7Be、210Pb和210Po活度浓度水平及辐射剂量评估

Abstract

Abstract: In order to study the activity concentration and to estimate the committed effective dose through inhalation of ⁷Be, ²¹⁰Pb and ²¹⁰Po in the atmospheric aerosols of Tianjin, TSP samples from 2018 to 2020 were analyzed. Activity concentrations of ⁷Be,²¹⁰Pb and ²¹⁰Po in TSP were in the range of 0.74-15.0 mBq/m³, 0.21-2.5 μBq/m³ and 0.17-0.74 μBq/m³, respectively. The activity concentrations of three radionuclides were at highest in winter. This is the combined effect of the airflow from high latitudes and the increased pollution emission in winter season in Tianjin. The total committed effective dose caused by ⁷Be, ²¹⁰Pb and ²¹⁰Po was in the range of 6.28-40.1 μSv/a, which was far lower than the dose limits for public exposure and not enough to threaten human health.

Key words: ⁷Be, ²¹⁰Pb, ²¹⁰Po, committed effective dose, Tianjin

CLC Number:

X831

CUI Ming, YU Chuan, GAO Jianzheng. A study of ⁷Be, ²¹⁰Pb and ²¹⁰Po in the atmosphere of Tianjin and the committed effective dose from 2018 to 2020[J].RADIATION PROTECTION, 2023, 43(5): 495-500.

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A study of ⁷Be, ²¹⁰Pb and ²¹⁰Po in the atmosphere of Tianjin and the committed effective dose from 2018 to 2020

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A study of 7Be, 210Pb and 210Po in the atmosphere of Tianjin and the committed effective dose from 2018 to 2020

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A study of ⁷Be, ²¹⁰Pb and ²¹⁰Po in the atmosphere of Tianjin and the committed effective dose from 2018 to 2020